CN109304782A - A kind of processing technology of Recombined bamboo or wood carbonation - Google Patents
A kind of processing technology of Recombined bamboo or wood carbonation Download PDFInfo
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- CN109304782A CN109304782A CN201810743086.5A CN201810743086A CN109304782A CN 109304782 A CN109304782 A CN 109304782A CN 201810743086 A CN201810743086 A CN 201810743086A CN 109304782 A CN109304782 A CN 109304782A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses the processing technologys of a kind of Recombined bamboo or wood carbonation, successively include carbonization treatment, drying, impregnation, display, assembly, hot pressing and ageing, bamboo beam is specifically put into in carbonization treatment impregnation carbonization in the process tank of the catalyst of carburization agent and 0.05-0.2 part containing 0.2-1 parts, dipping temperature is 25-80 DEG C, and dip time is 2-6 hours；The present invention not only has preferable fungicidal properties and dimensional stability, but also have the characteristics that simple process, it is low in cost, without discharge, no pollution, strong operability, powder performance is stable, recyclable, absorbability is good, precious timber can be replaced, precious timber resource is saved.
Description
Technical field
The present invention relates to the processing technology of a kind of Recombined bamboo or Scrimber, in particular to a kind of Recombined bamboo or recombination wood carbonation
Processing technology, be related to timber floor manufacturing field.
Background technique
Carbonization Recombined bamboo be it is a kind of bamboo wood is carbonized after reorganize and strengthened molding novel bamboo composite material,
Have the characteristics that intensity is big, good toughness, hardness are high, resistance to mould rotten, be widely used in indoor and outdoor floor, furniture, structural building material,
Ornament materials etc..But carbonization Recombined bamboo mostly uses greatly high-temperature heat treatment processing technology at present, energy consumption is high, and the period is long, production effect
Rate is low, and mass loss rate is up to 10%-20% or so, and large quantity of exhaust gas and waste liquid are discharged in heat treatment process, pollutes environment.
Summary of the invention
Technical problem to be solved by the present invention lies in provide the processing technology of a kind of Recombined bamboo or wood carbonation.The present invention is not
Only have preferable fungicidal properties and dimensional stability, but also have simple process, it is low in cost, without discharge, no pollution, can
Stable, recyclable, absorbability the is good feature of strong operability, powder performance can replace precious timber, save precious wood aptitude
Source.
In order to solve the above technical problems, technical scheme is as follows: the processing technology of a kind of Recombined bamboo or wood carbonation,
The technique is bamboo beam to be first placed in impregnation carbonization in the confection including water, carburization agent and assistant toner, then be dried, soak
Glue is displayed, assembly, hot pressing and molding, to realize the carbonization processing of Recombined bamboo.
In the processing technology of above-mentioned Recombined bamboo or wood carbonation, the confection 100 parts of water every by weight includes
The assistant toner of 0.2-4 parts of carburization agent and 0.05-0.2 part.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, the confection 100 parts of water every by weight includes
The assistant toner of 0.2-1 parts of carburization agent and 0.08-0.12 part.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, the carburization agent be zinc chloride, copper chloride, iron chloride,
One of aluminum sulfate, magnesium chloride, calcium chloride, citric acid, acetic acid, concentrated hydrochloric acid, the concentrated sulfuric acid, phosphoric acid, boric acid and/or maleic anhydride
Or a variety of combination.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, the assistant toner is tannin, ferrous sulfate and/or phenol
One of or a variety of combinations.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, the carburization agent is hydrochloric acid, and the assistant toner is sulphur
It is sour ferrous.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, the confection 100 parts of water every by weight is also wrapped
0.05-0.1 parts of molecular sieve catalysts are included, the molecular sieve catalyst is sodium Y zeolite catalyst and/or calcium Y type molecule
Sieve catalyst.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, specifically includes the following steps:
A, bamboo beam carbonization treatment: is placed in impregnation carbonization, dipping temperature in the process tank including water, carburization agent and assistant toner
It is 25-80 DEG C, dip time is 2-12 hours；
B, drying: bamboo beam is dry at a temperature of 50-80 DEG C, and the dry moisture content to bamboo beam is 10-18%；
C, impregnation: taking solid content is the phenolic resin glue of 25-45%, and bamboo beam is impregnated to 10-24 points in phenolic resin glue
Clock；
D, it displays: the bamboo Shu Chenfang 3-7 days after impregnation；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.5-2MPa, hot pressing temperature 130-
180 DEG C, 45-80 DEG C is cooled to after hot pressing 1h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, specifically includes the following steps:
A, carbonization treatment: bamboo beam is put into the process tank including water, carburization agent, assistant toner and molecular sieve catalyst and is impregnated
Carbonization, dipping temperature are 50-65 DEG C, and dip time is 4-10 hours；
B, drying: bamboo beam is dry at a temperature of 50-70 DEG C, and drying to moisture content is 10-18%；
C, impregnation: taking solid content is the phenolic resin glue of 25-45%, and bamboo beam is impregnated to 5-15 points in phenolic resin glue
Clock；
D, it displays: the bamboo Shu Chenfang 3-4 days after impregnation；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.5-2MPa, hot pressing temperature 140-
160 DEG C, 60-70 DEG C is cooled to after hot pressing 0.5-1.5h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
In the processing technology of Recombined bamboo or wood carbonation above-mentioned, specifically includes the following steps:
A, carbonization treatment: bamboo beam is put into containing 100 parts of water, 1 part of hydrochloric acid, 1 part of ferrous sulfate and 0.08 part of sodium Y type molecule
Impregnation carbonization in the process tank of sieve catalyst, dipping temperature are 60 DEG C, and dip time is 8 hours；
B, drying: bamboo beam is dry at a temperature of 60 DEG C, and the dry moisture content to bamboo beam is 15%；
C, impregnation: taking solid content is 32% phenolic resin glue, and bamboo beam is impregnated 10 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang after impregnation 3 days；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.7MPa, and hot pressing temperature is 145 DEG C, heat
65 DEG C are cooled to after pressure 1h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
Compared with prior art, the invention has the following advantages:
1, the present invention has abandoned the technological means that currently used high-temperature heat treatment is carbonized, the carbonization of high-temperature heat treatment
Technology discharges large quantity of exhaust gas and waste liquid during heat treatment, pollutes environment, and bamboo wood is easy to become fragile at high temperature, leads to bamboo
Material amount loss rate causes volume recovery to reduce up to 10%~20%.And the present invention carries out medicament carbon using carburization agent and catalyst
Change, efficiently solve existing technical problem, there is asepsis environment-protecting, selected medicament is small molecule compound, is easily permeated, can
With the uniform pickup in bamboo wood.These small molecule compounds can also enhance while being carbonized bamboo wood the waterproof of bamboo wood, antibacterial and
The performances lasting medicine such as fire-retardant.Due to being that carburization agent and catalyst are absorbed into inside bamboo wood to work in technique, Er Feili
The ingredient in bamboo wood is dissolved out with medicament, medicament can be reduced in because being absorbed into bamboo wood, can add medicine by equal proportion
Agent, circulation and sustainable utilization, without discharge.Medicament makes to be chemically reacted inside bamboo wood, achievees the purpose that carbonization discoloration, because
This anti-current anti-degradability of becoming estranged is strong.
2, treatment process of the present invention is simple, at low cost, strong operability, without putting into large scale equipment, with current technology
Scheme is compared, and production cost of the invention can reduce by 15% or more, is suitble to industrialized production.
3, the carbonization recombined bamboo plate prepared in the present invention also has very superior anti-mold effect and dimensional stability.It is attached
Fig. 1 is the microstructure of common Recombined bamboo, and attached drawing 2 is the microstructure of Recombined bamboo of the invention, from attached drawing 1 it can be seen that common
Recombined bamboo includes numerous amylum bodies, and amylum body is to lead to the mouldy important origin cause of formation, therefore the mould proof effect of common Recombined bamboo
Fruit is unsatisfactory.And attached drawing 2 is the microstructure of Recombined bamboo of the present invention, from attached drawing 2 it can be seen that the fiber of Recombined bamboo of the present invention
Interior amylum body ingredient is few, this is because amylum body ingredient is largely divided under the medicament carbonization of carburization agent and catalyst
Solution, therefore the anti-mold effect of Recombined bamboo of the present invention is very superior.Attached drawing 3 is prevented outside common Recombined bamboo and Recombined bamboo room of the invention
Mould efficiency comparative diagram, lines a is mould proof efficiency chart outside Recombined bamboo room of the invention in Fig. 3, and lines b is outside common Recombined bamboo room
Mould proof efficiency chart, from figure 3, it can be seen that mould proof efficiency of the invention does not decay, and general between outdoor placement -10 days 7 days
Mould proof efficiency decline is obvious after 7 days for logical Recombined bamboo；In outdoor 30 day after tomorrow of placement, mould proof efficiency of the invention still has 63%,
And it is zero that common mould proof efficiency of the Recombined bamboo after outdoor placement 18 days, which has been approached, it can thus be seen that heavy bamboo group of the invention
There is very huge beneficial effect on anti-mold effect compared to common Recombined bamboo.Attached drawing 4 is common Recombined bamboo and of the invention
Dimensional stability changes comparative diagram outside Recombined bamboo room, it is apparent that the present invention compares existing common recombination from Fig. 4
Bamboo, it is no matter more superior in water suction width expansion rate, or on thickness swelling rate.
4, the carbonization recombined bamboo plate prepared in the present invention, various colors are naturally full, the texture with high-class timber.
Fig. 7 is the color contrast of carburization agent and the finished product under assistant toner different ratio, from figure 7 it can be seen that different carburization agents and helping
Recombined bamboo plate made from the proportion of toner, various colors, and the texture with high-class timber.
Detailed description of the invention
Fig. 1 is the microstructure of common Recombined bamboo；
Fig. 2 is the microstructure of Recombined bamboo of the invention；
Fig. 3 is mould proof efficiency comparative diagram outside common Recombined bamboo and Recombined bamboo room of the invention；
Fig. 4 is that dimensional stability changes comparative diagram outside common Recombined bamboo and Recombined bamboo room of the invention；
Fig. 5 is comparison diagram of the different dip times to outdoor re-combined bamboo plate thickness swelling rate；
Fig. 6 is the structural schematic diagram that test specimen central point marks in 4 test method step 2 of embodiment；
Fig. 7 is the recombined bamboo plate color change figure of carburization agent and assistant toner under different ratio.
Specific embodiment
Embodiment 1: the processing technology of Recombined bamboo or wood carbonation, specifically includes the following steps:
A, carbonization treatment: bamboo beam is put into the process tank containing 100 parts of water, 1 part of iron chloride and 0.2 part of tannin
Impregnation carbonization, dipping temperature are 30 DEG C, and dip time is 8 hours；
B, drying: bamboo beam is dry at a temperature of 78 DEG C, it is ensured that bamboo beam moisture content is 12% after dry；
C, impregnation: taking solid content is 31% phenolic resin glue, and bamboo beam is impregnated 15 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang after impregnation 4 days；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.8MPa, and hot pressing temperature is 160 DEG C, heat
70 DEG C are cooled to after pressure 1h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
Embodiment 2: the processing technology of Recombined bamboo or wood carbonation, specifically includes the following steps:
A, carbonization treatment: bamboo beam is put into the process tank containing 100 parts of water, 5 parts of calcium chloride and 0.1 part of phenol and is soaked
Stain carbonization, dipping temperature are 45-55 DEG C, and dip time is 8 hours；
B, drying: bamboo beam is dry at a temperature of 60 DEG C, and the dry moisture content to bamboo beam is 10%；
C, impregnation: taking solid content is 32% phenolic resin glue, and bamboo beam is impregnated 10 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang 3-4 days after impregnation；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.7MPa, and hot pressing temperature is 145 DEG C, heat
65 DEG C are cooled to after pressure 1h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
Embodiment 3: the processing technology of Recombined bamboo or wood carbonation, specifically includes the following steps:
Take 100 parts of water, 1 part of hydrochloric acid, 1 part of ferrous sulfate and 0.08 part of sodium Y zeolite catalyst merging mixed processing tank
In, be warming up to 60 DEG C, bamboo beam is placed in, after dip time 8 hours；At a temperature of dry, drying by bamboo beam at 60 DEG C again
To bamboo beam moisture content 10%；Then bamboo beam is dipped in the phenolic resin glue that solid content is 32% 10 minutes, takes out bamboo beam
It is displayed under room temperature 3 days, the bamboo beam after impregnation is pressed and arranges assembly, hot pressing, hot pressing pressure 1.7MPa, hot pressing temperature along machine direction
Degree is 145 DEG C, hot pressing time 1 hour, is cooled to 65 DEG C after hot pressing 1h, cooling and shaping obtains finished product after hot pressing.
The recombined bamboo plate that embodiment 3 is manufactured room in GB/T 30364-2013 " recombination bamboo flooring " according to national standards
External application Recombined bamboo dimensional stability requirements carry out the survey of water suction width expansion rate and thickness swelling rate with common Recombined bamboo
Examination, test result such as table 1.
1 outdoor use board dimension stability of table
It requires according to national standards, outdoor re-combined bamboo floor water suction width expansion rate qualified product requirement≤4.0% is excellent
Product require≤3.0%, and thickness swelling rate qualified product requires≤10.0%, and high-class product requires≤5.0%, as shown in Table 1, should
The water suction width expansion rate of carbonization recombined bamboo plate is much smaller than 3.0%, and thickness swelling rate is less than 5.0%, and be at the top of one's class product
Rank.
Test result shows that hemicellulose is amorphous substance, is made of two or more glycosyls, and structure, which has, divides
, contain hydrophilic radical on main chain and side chain, thus be the maximum component of hygroscopicity in plate.Carbonization treatment skill of the invention
In art, certain polysaccharide in hemicellulose are easy to be cracked into the pyrolysis product of furfural and certain carbohydrates, under the action of heat, this
Polymerization can occur again and generate polymer not soluble in water for a little substances, to reduce the hygroscopicity of wood materials.Meanwhile fiber
The hydroxyl of element is reduced, and structure changes, and can also reduce hygroscopicity.
The recombined bamboo plate that the present embodiment 3 is produced GB/T 30364-2013 according to national standards is recombinated with high temperature cabonization
Bamboo carries out the test of water suction width expansion rate and thickness swelling rate, test result such as table 2.
2 outdoor use board dimension stability of table
The recombined bamboo plate that the present embodiment 3 is produced GB/T 30364-2013 according to national standards is raw with Examples 1 and 2
Produce the test that Recombined bamboo carries out water suction width expansion rate and thickness swelling rate, test result such as table 3.
As can be seen from Table 2 with the Recombined bamboo of embodiment 3 compared with common high temperature cabonization Recombined bamboo, in dimensional stability
Upper water suction width expansion rate is reduced to 0.62% from 1.57%, and thickness swelling rate is reduced to 2.97% from 9.29%, size
Stabilizing effect is promoted clearly.
3 outdoor use board dimension stability of table
From table 3 it can be seen that one side embodiment 3 preferred technological parameter and dosages distribution, on the other hand improve leaching
Stain temperature (deep carbon), so that the carbonization Recombined bamboo of embodiment 3 is steady compared to the size of the carbonization Recombined bamboo of embodiment 1 and embodiment 2
Qualitative effect is more outstanding, produces unexpected technical effect.
Embodiment 4: the dip time of the confection including carburization agent and assistant toner is tested:
1, it takes 7 groups of test panels as test group, is processed using carbonization processing technology of the invention, it is unique to distinguish
Be confection dip time it is different, the dip time of this 7 groups of test panels is respectively 2 hours, 4 hours, 8 hours, it is 12 small
When, 16 hours, 20 hours, 24 hours.The common recombined bamboo plate for not using confection to impregnate is taken again as a control group.
2, test method
(1) 7 groups of test floors and control group are placed on (20 ± 2) DEG C together, it is quiet under the conditions of relative humidity (65 ± 5) %
It sets to constant mass.Be separated by 24 hours twice weighing no more than test specimen quality 0.1% be considered as it is constant, weighing be accurate to 0.01g.
(2) test specimen is as shown in fig. 6, carry out central point label, by thickness in sample dimensions related in GB/T17657 measurement
Its thickness h of specifying measurement1, it is accurate to 0.01mm.
(3) test specimen is dipped in pH value is 7 ± 1, and temperature is (100 ± 2) DEG C boiling bubbly water 4h, directly by test specimen point after taking-up
Dry 20h in the air dry oven for lying in (63 ± 3) DEG C is opened, then immerses (100 ± 2) DEG C boiling bubbly water 4h, is wiped after taking-up
The water of surface of test piece attachment cools down 10min at room temperature and measures.Its thickness h is surveyed in former measurement point2, it is accurate to 0.01mm.
Measurement work should be completed in 10min.Test specimen should be totally immersed into (100 ± 2) DEG C boiling water when boiling test specimen.Test should be replaced every time
Water.
The thickness swelling rate T of test specimenhIt is calculated as follows, is accurate to 0.1%.
In formula:
Th--- the thickness swelling rate of test specimen, %；
h1--- the thickness of test specimen before soaking, unit are millimeter (mm)；
h1--- the thickness of test specimen after immersion, unit are millimeter (mm).
The thickness swelling rate of test specimen is arithmetic mean of instantaneous value, is accurate to 0.1%.
The according to national standards GB/T 30364-2013's such as test specimen preparation, measurement and test method " recombination bamboo flooring "
Relevant regulations carry out.
For test result as shown in attached 5, the thickness swelling rate of the common recombined bamboo plate of control group has reached 20% or more,
Expansion rate is excessive, illustrates that the dimensional stability of common recombined bamboo plate and expansion rate of water absorption are unsatisfactory.Dip time is respectively 2
The thickness swelling rate of the test panels of hour, 20 hours and 24 hours is all larger than 5% and less than 10%, illustrates using this hair
The dimensional stability and thickness swelling rate of the recombined bamboo plate of bright processing technology are substantially better than common recombination bamboo flooring, but
Effect is not optimal.Dip time is respectively the water suction of 4 hours, 8 hours, 12 hours and 16 hours test panels
Thickness swelling is respectively less than 5%, and effect is more superior, and from figure 5 it can be seen that the test specimen that dip time is 8 hours, water suction
Thickness swelling is minimum, and effect is the most superior.
Claims (10)
1. the processing technology of a kind of Recombined bamboo or wood carbonation, it is characterised in that: the technique is that first bamboo beam is placed in including water, carbonization
Impregnation carbonization in the confection of agent and assistant toner, then be dried, impregnation, display, assembly, hot pressing and molding, to realize
The carbonization of Recombined bamboo is processed.
2. the processing technology of Recombined bamboo according to claim 1 or wood carbonation, it is characterised in that: the confection is pressed
The every 100 parts of water of parts by weight includes 0.2-4 parts of carburization agent and 0.05-0.2 parts of assistant toner.
3. the processing technology of Recombined bamboo according to claim 2 or wood carbonation, it is characterised in that: the confection is pressed
The every 100 parts of water of parts by weight includes 0.2-1 parts of carburization agent and 0.08-0.12 parts of assistant toner.
4. the processing technology of Recombined bamboo according to claim 1 or 2 or wood carbonation, it is characterised in that: the carburization agent
For zinc chloride, copper chloride, iron chloride, aluminum sulfate, magnesium chloride, calcium chloride, citric acid, acetic acid, concentrated hydrochloric acid, the concentrated sulfuric acid, phosphoric acid, boron
One of acid and/or maleic anhydride or a variety of combinations.
5. the processing technology of Recombined bamboo according to claim 1 or 2 or wood carbonation, it is characterised in that: the assistant toner
For one of tannin, ferrous sulfate and/or phenol or a variety of combinations.
6. the processing technology of Recombined bamboo according to claim 5 or wood carbonation, it is characterised in that: the carburization agent is salt
Acid, the assistant toner are ferrous sulfate.
7. the processing technology of Recombined bamboo according to claim 1 or 2 or wood carbonation, it is characterised in that: the mixing medicine
Agent 100 parts of water every by weight further includes 0.05-0.1 parts of molecular sieve catalysts, and the molecular sieve catalyst is sodium Y type molecule
Sieve catalyst and/or calcium Y zeolite catalyst.
8. the processing technology of Recombined bamboo according to claim 1-7 or wood carbonation, it is characterised in that: specifically include
Following steps:
A, carbonization treatment: bamboo beam, which is placed in impregnation carbonization, dipping temperature in the process tank including water, carburization agent and assistant toner, is
25-80 DEG C, dip time is 2-12 hours；
B, drying: bamboo beam is dry at a temperature of 50-80 DEG C, and the dry moisture content to bamboo beam is 10-18%；
C, impregnation: taking solid content is the phenolic resin glue of 25-45%, and bamboo beam is impregnated 10-24 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang 3-7 days after impregnation；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.5-2MPa, and hot pressing temperature is 130-180 DEG C,
45-80 DEG C is cooled to after hot pressing 1h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
9. the processing technology of Recombined bamboo according to claim 8 or wood carbonation, it is characterised in that: specifically include following step
It is rapid:
A, bamboo beam carbonization treatment: is put into impregnated carbon in the process tank including water, carburization agent, assistant toner and molecular sieve catalyst
Change, dipping temperature is 50-65 DEG C, and dip time is 4-10 hours；
B, drying: bamboo beam is dry at a temperature of 50-70 DEG C, and drying to moisture content is 10-18%；
C, impregnation: taking solid content is the phenolic resin glue of 25-45%, and bamboo beam is impregnated 5-15 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang 3-4 days after impregnation；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.5-2MPa, and hot pressing temperature is 140-160 DEG C,
60-70 DEG C is cooled to after hot pressing 0.5-1.5h；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
10. the processing technology of Recombined bamboo according to claim 9 or wood carbonation, it is characterised in that: specifically include following step
It is rapid:
A, carbonization treatment: bamboo beam is put into and is urged containing 100 parts of water, 1 part of hydrochloric acid, 1 part of ferrous sulfate and 0.08 part of sodium Y type molecular sieve
Impregnation carbonization in the process tank of agent, dipping temperature are 60 DEG C, and dip time is 8 hours；
B, drying: bamboo beam is dry at a temperature of 60 DEG C, and the dry moisture content to bamboo beam is 15%；
C, impregnation: taking solid content is 32% phenolic resin glue, and bamboo beam is impregnated 10 minutes in phenolic resin glue；
D, it displays: the bamboo Shu Chenfang after impregnation 3 days；
E, assembly: bamboo beam is pressed and is arranged along machine direction, is put into mold；
F, hot pressing: slab being put into hot press and carries out hot pressing, hot pressing pressure 1.7MPa, and hot pressing temperature is 145 DEG C, hot pressing 1h
After be cooled to 65 DEG C；
G, be aged: cooling and shaping obtains finished product after the completion of hot pressing.
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| CN114393664A (en) * | 2022-01-27 | 2022-04-26 | 广东省林业科学研究院 | Bamboo-based fiber composite material and preparation method and application thereof |
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